Loop lengths from 12 to 27 mm* inside height of the loop possible with the Loop Card.
You can also measure your center shot. The famous dimension 13/16" is marked with a star.
Instructions on how to use the Loop Card can also always be called up via smartphone using the QR-Code on the Loop Card.
*Specifications may vary as they depend on the nock used and the flaming on the second side of the loop rope.